Hyundai Santa Fe (TM): Controller / Heater & A/C Control Unit (Manual). Repair procedures

Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual / Heating,Ventilation And Air Conditioning / Controller / Heater & A/C Control Unit (Manual). Repair procedures

Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Remove the console upper cover (A).
3.
Press the lock pin, separate the console upper cover connectors (A).
4.
Loosen the mounting screws, remove the drive mode unit (A) and SBW switch unit assembly (B).
5.
Loosen the mounting screws, remove the heater & A/C control unit (A).
6.
Install in the reverse order of removal.
  
•
Replace any damaged clips.
•
Make sure the connector is connected properly.

    Component Connector Pin Function Pin No Connector A Connector B 1 Battery Low 2 ISG B+ Common 3 ILL+ (TAIL) Ground 4 Sensor REF (+5V) Middle Low 5 Mode Actuator Feedback Middle High 6 Temperature Actuator Feedback High 7 Intake Actuator Feedback - 8 Evaporator Temperature Sensor (+) 9 Ambient Temperature Sensor (+) 10 Mode Actuator (Vent) 11 Mode Actuator (Defrost) 12 Temperature Control Actuator (Cool) 13 Temperature Control Actuator (Warm) 14 Intake Actuator (Fresh Air) 15 Intake Actuator (Recirculated Air) 16 HTD (Rear Defrost) 17 Rear Defogging Swich 18 Rear C-LINE 19 Blower Common Signal 20 ILL - (RHEO) 21 IGN2 22 IGN1 23 - 24 Rear Blower Motor (+) 25 Rear Mosfet (GATE) 26 Rear Mosfet (DRAIN F/B) 27 Max Blower on Signal 28 PTC Relay 2 (DIESEL) PTC Relay 1 (GASOLINE) 29 - 30 PTC ON Signal (DIESEL) - (GASOLINE) 31 - 32 - 33 P-CAN_(HIGH) 34 P-CAN_(LOW) 35 - 36 ECV (+) 37 ECV (-) 38 Sensor Ground 39 Ground 40 Ground

    Component Connector Pin Function Pin No Connector A Connector B 1 Battery Temperature Actuator Feedback - Passenger 2 ISG B+ Temperature Actuator (Cool) - Passenger 3 ILL+ (TAIL) Temperature Actuator (Warm) - Passenger 4 Sensor REF (+5V) Defogging Actuator Feedback 5 Mode Actuator Feedback Defogging Actuator (Open) 6 Temperature Actuator Feedback - Driver Defogging Actuator (Close) 7 Intake Actuator Feedback - 8 Evaporator Temperature Sensor (+) - 9 Ambient Temperature Sensor (+) - 10 Mode Actuator (Vent) In-car sensor (+) 11 Mode Actuator (Defrost) PAB IGN1 12 Temperature Control Actuator (Cool) - Driver Defogging Sensor Glass Temperature 13 Temperature Control Actuator (Warm) - Driver - 14 Intake Actuator (Fresh Air) - 15 Intake Actuator (Recirculated Air) - 16 HTD (Rear Defrost) Ground 17 Rear Defogging Swich Rear Blower Motor (+) 18 - Rear Mosfer (Drain Feedback) 19 - Rear Mosfer (Gate) 20 ILL - (RHEO) - 21 IGN 2 - 22 IGN 1 - 23 Blower Motor (+) - 24 Photo Sensor (-)_LEFT LIN BUS (Climate control) 25 Photo Sensor (-)_RIGHT - 26 Defogging Sensor Data - 27 Defogging Sensor SCL - 28 - - 29 PTC Relay 2 (DIESEL) / Driver Seat Signal PWM PTC Relay (GASOLINE) 30 PTC ON Signal (DIESEL) / - - (GASOLINE) 31 - Rear C-LINE 32 - - 33 P_CAN (HIGH) 34 P_CAN (LOW) 35 Mosfet (DRAIN F/B) 36 Mosfet (GATE) 37 ECV (+) 38 ECV (-) Ground 39 Sensor Ground 40 Ground

    Other information:

    Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual: Temperature Control Actuator. Repair procedures

    Inspection 1. Turn the ignition switch OFF. 2. Disconnect the temperature control actuator connector. 3. Verify that the temperature control actuator operates to the cool position when connecting 12V to terminal 3 and grounding terminal 7.

    Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual: Rear Evaporator Core. Repair procedures

    Replacement 1. Remove the rear heater & A/C unit. (Refer to Rear Heater - "Rear Heater Unit") 2. Loosen the mounting screws and remove the rear A/C lower case (A).

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